For decades, this waterfall remained hidden because of an artificial dam.

The crash of this great airship signaled the beginning of the end for dirigibles.

All that remains of a gigantic earth-moving machine.

This schoolhouse for Black American children is one of the oldest remaining in southeastern Ohio.

An abandoned asylum incorporated into a college campus.

The failure of one component toppled this entire bridge during rush hour.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

A suspended garden, now gone, once hung in the middle of this abandoned church.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

A headstone tells the sad story of a lost little boy and his pet dog.

A miniature world of concrete and stone in Springfield, Ohio.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

In this relatively flat state the highest point is an honored place.

The final resting place of the most famous sharpshooter.

The headquarters of a pioneering cast iron and cast aluminum cookware company is in ruins, but still standing.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.